US8443602B2 - Closely-coupled exhaust aftertreatment device for a turbocharged internal combustion engine - Google Patents
Closely-coupled exhaust aftertreatment device for a turbocharged internal combustion engine Download PDFInfo
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- US8443602B2 US8443602B2 US12/750,277 US75027710A US8443602B2 US 8443602 B2 US8443602 B2 US 8443602B2 US 75027710 A US75027710 A US 75027710A US 8443602 B2 US8443602 B2 US 8443602B2
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- Prior art keywords
- exhaust
- primary
- bypass valve
- fluid communication
- internal combustion
- Prior art date
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- Expired - Fee Related, expires
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/007—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in parallel, e.g. at least one pump supplying alternatively
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/105—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having the form of a chamber directly connected to the cylinder head, e.g. without having tubes connected between cylinder head and chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/02—Gas passages between engine outlet and pump drive, e.g. reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
- F01N2410/02—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device in case of high temperature, e.g. overheating of catalytic reactor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- Exemplary embodiments of the present invention are related to an exhaust aftertreatment system for an internal combustion engine and turbocharger and, more specifically, to an exhaust aftertreatment system that includes an exhaust aftertreatment device that is closely coupled to the engine and turbocharger.
- turbocharger or twin turbochargers
- the use of a turbocharger or twin turbochargers has become more prevalent as manufacturers seek to improve the output performance of various internal combustion engine configurations.
- the turbocharger is frequently given preference in the exhaust aftertreatment system over various exhaust aftertreatment devices.
- the turbocharger is located upstream of the various exhaust aftertreatment devices, such as the oxidation catalyst, in order to maximize the energy input to, and output available from, the turbocharger.
- catalyst light-off is delayed by the thermal load associated with the turbocharger and by locating the exhaust aftertreatment devices, particularly the oxidation catalyst, farther from the exhaust ports.
- turbocharged internal combustion engine configurations that also provide exhaust aftertreatment systems that provide for rapid catalyst light-off.
- an exhaust aftertreatment system for an internal combustion engine includes an exhaust manifold that is configured for fluid communication with an exhaust port, or a plurality of exhaust ports, of an internal combustion engine to receive an exhaust gas flow therefrom. It also includes a primary turbocharger that includes a primary turbine having a primary turbine exhaust inlet that is configured for fluid communication with the exhaust manifold of the engine to receive a primary turbine exhaust gas flow therefrom and to pass this flow to a primary turbine exhaust outlet.
- an exhaust bypass valve that is operable for movement between an open position and a closed position, the exhaust bypass valve having an exhaust bypass valve inlet that is configured for fluid communication with the exhaust manifold in the open position to receive a bypass exhaust gas flow therefrom and pass this flow to an exhaust bypass valve outlet.
- an exhaust aftertreatment device configured for thermal communication with the exhaust manifold, the device having a device inlet configured for fluid communication with the primary turbine exhaust outlet to receive the primary turbine exhaust gas flow therefrom the bypass outlet to receive the bypass exhaust gas flow therefrom when the bypass valve is in the open position and a device outlet.
- an internal combustion engine that includes an exhaust aftertreatment system. It includes an internal combustion engine having at least one exhaust port, and including a plurality of exhaust ports, and at least one intake port, and including a plurality of intake ports. It also includes an exhaust manifold that is configured for fluid communication with the exhaust port(s) to receive an exhaust gas flow therefrom. It further includes a primary turbocharger comprising a primary turbine having a primary turbine exhaust inlet that is configured for fluid communication with the exhaust manifold of the engine to receive a primary turbine exhaust gas flow therefrom and to pass this flow to the primary turbine exhaust outlet.
- It also further includes an exhaust bypass valve that is operable for movement between an open position and a closed position, the exhaust bypass valve having an exhaust bypass valve inlet that is configured for fluid communication with the exhaust manifold in the open position to receive a bypass exhaust gas flow therefrom and pass this flow to an exhaust bypass valve outlet.
- an exhaust aftertreatment device configured for thermal communication with the exhaust manifold, the device having a device inlet configured for fluid communication with the primary turbine exhaust outlet to receive the primary exhaust gas flow therefrom and the bypass outlet to receive the bypass exhaust gas flow therefrom when the bypass valve is in the open position and a device outlet.
- FIG. 1 is a perspective view of an exemplary embodiment of an exhaust aftertreatment system for an internal combustion engine
- FIG. 2 is a cross-sectional perspective view of FIG. 1 taken along section 2 - 2 ;
- FIG. 3 is a schematic view of the exhaust aftertreatment system and internal combustion engine of FIG. 1 ;
- FIG. 4 is a cross-sectional perspective view of FIG. 1 taken along section 4 - 4 ;
- FIG. 5 is a cross-sectional perspective view of FIG. 1 taken along section 5 - 5 ;
- FIG. 6 is a cross-sectional view of a second exemplary embodiment of an exhaust manifold and closely-coupled exhaust treatment device for an internal combustion engine as disclosed herein;
- FIG. 7 is a cross-sectional view of a third exemplary embodiment of an exhaust manifold and closely-coupled exhaust treatment device for an internal combustion engine as disclosed herein.
- the present invention includes a closely-coupled exhaust aftertreatment device for use in an exhaust aftertreatment system for an internal combustion engine that includes at least one turbocharger as part of a forced-induction intake air system.
- the closely-coupled exhaust aftertreatment device of the invention may also be used in the exhaust aftertreatment system for internal combustion engines having a forced-induction intake air system that includes more than one turbocharger, including sequential twin-turbocharger forced-induction intake air systems.
- fluid communication means the passage of a fluid flow from one device or location to another device or location.
- fluid communication of an exhaust gas flow means communication of the exhaust gas flow from one exhaust treatment device to another.
- fluid communication of an intake airflow means communication of the flow from one intake air system device to another.
- fluid communication is done within a sealed system, although it also encompasses communication of fluids where the system is not sealed, or communication of the fluid to an external environment.
- fluid communication may encompass the use of various conduits, pipes, mounting flanges, seals, gaskets and other structures and features for accomplishing communication of the fluid.
- internal combustion engine 1 includes an exhaust aftertreatment system 10 .
- Exhaust aftertreatment system 10 includes an exhaust manifold 12 having a plenum 14 ( FIG. 2 ) by which the manifold is in fluid communication with at least one exhaust port 16 through which exhaust gas flow 18 from a respective combustion chamber (not shown) exits engine 1 as it is operated.
- Internal combustion engine 1 may include all manner of single and multicylinder engine configurations, including various in-line and V-type configurations (not shown), which may also include a plurality of exhaust ports 16 and corresponding exhaust gas flows 18 in fluid communication with plenum 14 , as illustrated in FIG. 2 .
- Exhaust gas flows 18 are merged within plenum 14 .
- Plenum 14 opens into primary turbine outlet 20 and bypass valve outlet 22 .
- Exhaust manifold 12 and plenum 14 also incorporate housing 24 that houses exhaust aftertreatment device 26 .
- Exhaust aftertreatment device 26 is illustrated herein as being disposed at least partially within exhaust manifold 12 and plenum 14 so that it is in direct thermal communication with exhaust gas flows 18 .
- housing 24 and exhaust aftertreatment device 26 that is disposed therein are exposed to and in thermal communication with these flows immediately after they have exited the respective combustion chambers and before they are subject to various thermal energy losses that occur within exhaust aftertreatment system 10 at points that are farther away from engine 1 .
- This is a particularly advantageous location for placement of housing 24 and exhaust aftertreatment device 26 because the temperature of the exhaust gas flows 18 at this location are higher than those within any other portion of exhaust aftertreatment system 10 , except those locations where exothermic reactions may occur within the system to add heat back into the system.
- Plenum 14 may also include one or more internal walls 30 that may be shaped to direct exhaust gas flows 18 within the exhaust manifold 12 and plenum 14 .
- engine 1 includes at least one turbocharger 32 that may be referred to as a primary or first turbocharger 32 .
- Primary turbocharger 32 includes a primary turbine 34 that comprises a portion of and is in fluid communication with exhaust aftertreatment system 10 and a primary compressor 36 that comprises a portion of and is in fluid communication with forced-induction intake air system 37 .
- Primary turbine 34 is in fluid communication with, and configured to receive a primary turbine exhaust gas flow 38 from, exhaust manifold 12 through primary turbine outlet 20 thereof. This fluid communication may be accomplished by any suitable means, including the direct attachment of primary turbine exhaust inlet 40 to exhaust manifold 12 proximate primary turbine outlet 20 .
- Fluid communication may also be promoted by use of an intermediary structure such as a conduit or mounting flange, such as upper mounting flange 41 to which primary turbine exhaust inlet 40 and primary turbine outlet 20 of exhaust manifold 12 may both be attached in order to provide such communication, as illustrated in FIGS. 1 and 2 .
- primary turbine exhaust gas flow 38 is passed through a turbine volute (not shown) and across a turbine wheel (not shown) to rotate the turbine wheel and provide the motive force through a turbine shaft (not shown) to drive a compressor wheel (not shown) of primary compressor 36 in a conventional manner.
- the primary turbine exhaust gas flow 38 exits primary turbine 34 through primary turbine exhaust outlet 42 .
- Primary turbine exhaust outlet 42 is in fluid communication with exhaust aftertreatment device 26 through device inlet 44 such that the primary turbine exhaust gas flow 38 may be passed through housing 24 and exhaust aftertreatment device 26 as a portion of the exhaust aftertreatment system 10 .
- the invention also includes an exhaust bypass valve 46 as a part of an exhaust aftertreatment system 10 that is operable for movement between an open position 47 and a closed position 49 about an axis X of the valve body 51 ( FIG. 5 ).
- Exhaust bypass valve 46 has an exhaust bypass valve inlet 48 that is configured for fluid communication with the exhaust manifold 12 in the open position 47 to receive a bypass exhaust gas flow 50 therefrom and pass this flow to an exhaust bypass valve outlet 52 .
- Bypass valve outlet 52 is in fluid communication with exhaust aftertreatment device 26 through device inlet 44 to receive the bypass exhaust gas flow 50 therefrom.
- the invention may also include a secondary turbocharger having similar construction and operational characteristics to primary turbocharger 32 .
- Secondary turbocharger 54 includes secondary turbine 56 and a secondary compressor 58 .
- Secondary turbocharger 54 includes a secondary turbine 56 that comprises a portion of and is in fluid communication with exhaust aftertreatment system 10 and a secondary compressor 58 that comprises a portion of and is in fluid communication with forced-induction intake air system 37 .
- Secondary turbine 56 is in fluid communication with, and configured to receive a secondary turbine exhaust gas flow 60 from housing 24 and exhaust aftertreatment device 26 through exhaust aftertreatment device outlet 62 . This fluid communication may be accomplished by any suitable means, including the direct attachment of secondary turbine exhaust inlet 64 .
- Fluid communication may also be promoted by use of an intermediary structure such as a conduit or mounting flange, such as lower mounting flange 66 , to which secondary turbine exhaust inlet 64 and exhaust aftertreatment device outlet 62 may both be attached in order to provide such communication, as illustrated in FIGS. 1 and 5 .
- secondary turbine exhaust gas flow 60 is passed through a secondary turbine volute (not shown) and across a secondary turbine wheel (not shown) to rotate the secondary turbine wheel and provide the motive force through a secondary turbine shaft (not shown) to drive a secondary compressor wheel (not shown) of secondary compressor 58 in a conventional manner.
- the secondary turbine exhaust gas flow 60 exits secondary turbine 56 through secondary turbine exhaust outlet 68 .
- secondary turbine exhaust gas flow 60 can be passed to other exhaust treatment devices (not shown) that comprise exhaust aftertreatment system 10 , including various combinations of oxidation catalysts, selective catalytic reduction catalysts, particulate filters and the like.
- the forced-induction intake system 37 includes primary turbocharger 32 and secondary turbocharger 54 .
- Primary turbocharger 32 includes primary compressor 36 that has a primary compressor outlet 70 configured for fluid communication of a primary forced-induction intake airflow 72 to the intake port(s) 74 of engine 1 , such as by communication of a primary forced-induction intake airflow 72 to intake manifold 76 .
- Primary compressor also includes primary compressor inlet 78 for drawing in primary intake air.
- the secondary turbocharger 54 includes secondary compressor 58 having a secondary compressor outlet 80 configured for fluid communication of a secondary forced-induction intake airflow 82 to the primary compressor inlet and to an intake bypass valve 84 that is operable for movement between an open position 86 and a closed position 88 .
- the intake bypass valve 84 is configured in the open position 86 to pass the secondary forced-induction airflow 82 to the intake port(s) and in the closed position to pass the secondary forced-induction airflow to the primary compressor inlet 90 .
- Primary turbocharger 32 and secondary turbocharger 54 in the configuration shown in FIGS. 1-5 form a sequential twin turbocharger forced-induction air intake system for engine 1 .
- the housing 24 of exhaust aftertreatment device 26 may be disposed either partially within plenum 14 of exhaust manifold 12 , as illustrated in FIGS. 1 , 2 and 4 .
- housing 24 and exhaust treatment device 26 may be disposed completely within plenum 14 and manifold 12 , as illustrated in FIG. 6 .
- housing 24 may be formed separately (not shown) or formed integrally with exhaust manifold 12 .
- housing 24 is also in intimate thermal communication with exhaust gas flows 18 within plenum 14 of manifold, and may be configured to be completely surrounded by these flows in the embodiments of FIGS. 4 and 6 .
- housing 24 and exhaust aftertreatment device 26 may be disposed on the exhaust manifold 12 such that housing 24 is still in intimate thermal communication with exhaust gas flows 18 , but unlike the embodiments of FIGS. 4 and 6 , housing 24 is not surrounded, either partially ( FIG. 4 ) or completely ( FIG. 6 ), by exhaust gas flows 18 within plenum 14 of exhaust manifold 12 .
- plenum 14 is proximate a portion of the sidewall 92 of housing 24 that is exposed to exhaust gas flows 18 to provide intimate thermal communication of the heat within the exhaust gases, but is not surrounded by the exhaust gas flows 18 .
- FIG. 7 plenum 14 is proximate a portion of the sidewall 92 of housing 24 that is exposed to exhaust gas flows 18 to provide intimate thermal communication of the heat within the exhaust gases, but is not surrounded by the exhaust gas flows 18 .
- housing 24 may be formed separately (not shown) or formed integrally with exhaust manifold 12 , as shown in FIG. 7 .
- housing 24 may be a metal housing and may be formed integrally with exhaust manifold 12 , such as by casting. Alternately, housing 24 may be formed separately and joined to exhaust manifold 12 , or otherwise placed in intimate thermal communication with exhaust manifold 12 .
- Exhaust aftertreatment device 26 may be any suitable type of an exhaust aftertreatment device, including various types of catalysts.
- exhaust aftertreatment device 26 includes an oxidation catalyst (OC) of a type suitable for use with the particular type of engine 1 selected, including various types of gasoline or diesel engines.
- OC oxidation catalyst
- exhaust aftertreatment device 26 includes a diesel oxidation catalyst (DOC).
- DOC diesel oxidation catalyst
- the OC is in fluid communication with the engine 1 and, with reference to the exhaust gas flows 38 , 50 , is located downstream from engine 1 and configured to oxidize certain constituents of these exhaust gas flows to produce unregulated by-products or constituents that are adapted for further treatment in other components of exhaust aftertreatment system 10 , as described herein.
- the OC is a flow-through device that includes a metal or ceramic monolith or substrate having a honeycomb-like structure that includes a plurality of generally parallel, longitudinally-extending, interconnected cells that provide a network comprising a plurality of flow channels for receiving exhaust gas flows 38 , 50 that are separated by a corresponding network of cell walls.
- the substrate has a large surface area along the cell walls.
- the cell walls have a washcoat that includes a porous ceramic matrix with a surface 94 that is coated with a catalytically active amount of a Pt group metal catalyst.
- Suitable platinum group metals include Pt, Pd, Rh, Ru, Os or Ir, or a combination thereof. Of these, Pt or Pd, or combinations thereof, including alloys thereof, are particularly useful. Those that include both Pt and Pd are particularly useful, such as those having Pt:Pd ratios of about 2:1 to about 4:1.
- the platinum group metal catalyst catalyzes the oxidation of CO to CO 2 , as well as catalyzing the oxidation of various HC's, including gaseous HC's and liquid HC particles, including unburned fuel or oil, or fuel or other HC reactants that are introduced into exhaust aftertreatment system 10 to form CO 2 and H 2 O, thereby reducing harmful emissions and producing heat for use with other exhaust aftertreatment device, such as heat used to regenerate a particulate filter (PF).
- various HC's including gaseous HC's and liquid HC particles, including unburned fuel or oil, or fuel or other HC reactants that are introduced into exhaust aftertreatment system 10 to form CO 2 and H 2 O, thereby reducing harmful emissions and producing heat for use with other exhaust aftertreatment device, such as heat used to regenerate a particulate filter (PF).
- PF particulate filter
- the OC such as a DOC in the case of an exhaust aftertreatment system 10 for a diesel engine 1 , may be configured to convert various regulated exhaust constituents to other regulated or unregulated exhaust constituents through oxidation.
- the OC may be configured to oxidize HC to carbon dioxide (CO 2 ) and water (H 2 O), convert CO to carbon dioxide (CO 2 ) convert sulfur dioxide (SO 2 ) to sulfur trioxide (SO 3 ) and/or sulfuric acid (H 2 SO 4 ) and convert nitrogen oxide (NO) to nitrogen dioxide (NO 2 ), or otherwise.
- exhaust aftertreatment device 26 comprises an OC
- the OC may be configured to perform any one of the above conversions, combinations of the above conversions, or even all of the above conversions, depending on the reactant compounds and their concentrations found in the exhaust gas flows 38 , 50 , the temperature of the OC, and the platinum group metals selected as the catalyst.
- Other oxidations are contemplated as well, such as oxidation of aldehydes, polycyclic aromatic hydrocarbons or otherwise.
- the reactions in the OC may be used to reduce the odor of certain emission components.
- the OC may be housed within a separate housing 24 , including a metal housing, such as a metal can having an inlet opening and outlet opening, or otherwise, configured for providing support and directing fluid flow to the OC, as shown herein.
- the housing 24 may comprise any suitable shape or size including a cylindrically shaped compartment.
- the compartment may include attachment features, such as a retainer 96 to retain the OC within the housing 24 .
- OC including the housing 24
- injectors 104 e.g., fuel injectors
- Such additional features may be particularly advantageous for monitoring characteristics of the exhaust gas flow 38 , 50 , such as the flow rate of certain emission constituents (e.g., particulate matter or otherwise), which may be particularly advantageous for determining the necessity of initiating certain system processes, such as, for example, the regeneration of a PF (not shown) or other catalyst (not shown) within exhaust treatment system 10 .
- a first operating mode is defined when the exhaust bypass valve 46 is in the closed position 49 and the intake bypass valve 84 is in the closed position 88 .
- These valves may be controlled by signal communication from engine control system 98 .
- the exhaust treatment device 26 such as an OC, is configured to receive the primary turbine exhaust gas flow 38 and the secondary forced-induction airflow 82 of secondary compressor 58 is passed through the primary compressor inlet 78 .
- the pressure of the secondary forced-induction airflow 82 is increased within the primary compressor 36 and provided to the intake port(s) 74 of the engine 1 . This provides a maximum boost arrangement within the forced induction intake air system 37 .
- a second operating mode is defined when the exhaust bypass valve 46 is in the open position 47 and the intake bypass valve 84 is in the open position 86 , the exhaust aftertreatment device 26 , such as an OC is configured to receive the bypass exhaust gas flow 50 and the secondary forced-induction airflow 82 is passed through the intake bypass valve 84 directly to the intake port(s) 74 of the engine 1 .
- This provides a minimum boost arrangement within the forced induction intake air system 37 .
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
- Supercharger (AREA)
Abstract
Description
HC+O2=CO2+H2O (1)
CO+1/2O2=CO2 (2)
2SO2+O2=2SO3 (3)
SO3+H2O=H2SO4 (4)
NO+1/2O2=NO2 (5)
Claims (20)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US12/750,277 US8443602B2 (en) | 2010-03-30 | 2010-03-30 | Closely-coupled exhaust aftertreatment device for a turbocharged internal combustion engine |
DE102011015255.5A DE102011015255B4 (en) | 2010-03-30 | 2011-03-28 | Exhaust after-treatment system for an internal combustion engine |
CN201110120318.XA CN102287250B (en) | 2010-03-30 | 2011-03-30 | Closely-coupled exhaust aftertreatment device for a turbocharged internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US12/750,277 US8443602B2 (en) | 2010-03-30 | 2010-03-30 | Closely-coupled exhaust aftertreatment device for a turbocharged internal combustion engine |
Publications (2)
Publication Number | Publication Date |
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US20110239644A1 US20110239644A1 (en) | 2011-10-06 |
US8443602B2 true US8443602B2 (en) | 2013-05-21 |
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Application Number | Title | Priority Date | Filing Date |
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US12/750,277 Expired - Fee Related US8443602B2 (en) | 2010-03-30 | 2010-03-30 | Closely-coupled exhaust aftertreatment device for a turbocharged internal combustion engine |
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Country | Link |
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US (1) | US8443602B2 (en) |
CN (1) | CN102287250B (en) |
DE (1) | DE102011015255B4 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9003792B2 (en) | 2012-04-05 | 2015-04-14 | GM Global Technology Operations LLC | Exhaust aftertreatment and exhaust gas recirculation systems |
US9970295B2 (en) | 2016-01-29 | 2018-05-15 | Pratt & Whitney Canada Corp. | Engine assembly with turbine support casing |
US10001057B2 (en) | 2014-08-04 | 2018-06-19 | Achates Power, Inc. | Exhaust layout with accompanying firing sequence for two-stroke cycle, inline, opposed-piston engines |
US11939901B1 (en) | 2023-06-12 | 2024-03-26 | Edan Prabhu | Oxidizing reactor apparatus |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011107120A1 (en) * | 2011-07-12 | 2013-01-17 | Daimler Ag | Charging device for internal combustion engine of passenger car, has compressors compressing air supplied by combustion engine in four operating conditions and serially connected in series and parallel to each other in two conditions |
CN102588051B (en) * | 2012-02-29 | 2013-11-27 | 长城汽车股份有限公司 | Waste gas post-processing system of twin-turbo supercharged engine |
CN103726925A (en) * | 2012-10-10 | 2014-04-16 | 重庆长安汽车股份有限公司 | Automobile engine and arrangement structure of turbocharger |
US9010098B2 (en) | 2012-10-24 | 2015-04-21 | Electro-Motive Diesel, Inc. | After-treatment device |
DK179782B1 (en) * | 2017-09-29 | 2019-06-04 | MAN Energy Solutions | Internal combustion engine system |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4122673A (en) | 1973-09-28 | 1978-10-31 | J. Eberspacher | Internal combustion engine with afterburning and catalytic reaction in a supercharger turbine casing |
US5220789A (en) | 1991-03-05 | 1993-06-22 | Ford Motor Company | Integral unitary manifold-muffler-catalyst device |
US5709081A (en) | 1993-10-15 | 1998-01-20 | Dr. Ing. H.C.F. Porsche Ag | Exhaust gas system for a combustion engine with exhaust driven turbo charge |
US5987882A (en) * | 1996-04-19 | 1999-11-23 | Engelhard Corporation | System for reduction of harmful exhaust emissions from diesel engines |
US6354078B1 (en) * | 1996-02-22 | 2002-03-12 | Volvo Personvagnar Ab | Device and method for reducing emissions in catalytic converter exhaust systems |
US6713025B1 (en) | 1999-09-15 | 2004-03-30 | Daimlerchrysler Corporation | Light-off and close coupled catalyst |
US7380401B2 (en) * | 2003-05-09 | 2008-06-03 | Siemens Aktiengesellschaft | Method for monitoring the speed of a bi-turbocharger |
US20090314082A1 (en) | 2008-06-23 | 2009-12-24 | Sujan Vivek A | Virtual turbine speed sensor |
US7748213B2 (en) * | 2005-12-07 | 2010-07-06 | Nissan Motor Co., Ltd. | Exhaust system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8220264B2 (en) * | 2005-09-13 | 2012-07-17 | GM Global Technology Operations LLC | Integrated inboard exhaust manifolds for V-type engines |
JP5037263B2 (en) * | 2007-03-02 | 2012-09-26 | 本田技研工業株式会社 | Control device for internal combustion engine |
-
2010
- 2010-03-30 US US12/750,277 patent/US8443602B2/en not_active Expired - Fee Related
-
2011
- 2011-03-28 DE DE102011015255.5A patent/DE102011015255B4/en not_active Expired - Fee Related
- 2011-03-30 CN CN201110120318.XA patent/CN102287250B/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4122673A (en) | 1973-09-28 | 1978-10-31 | J. Eberspacher | Internal combustion engine with afterburning and catalytic reaction in a supercharger turbine casing |
US5220789A (en) | 1991-03-05 | 1993-06-22 | Ford Motor Company | Integral unitary manifold-muffler-catalyst device |
US5709081A (en) | 1993-10-15 | 1998-01-20 | Dr. Ing. H.C.F. Porsche Ag | Exhaust gas system for a combustion engine with exhaust driven turbo charge |
US6354078B1 (en) * | 1996-02-22 | 2002-03-12 | Volvo Personvagnar Ab | Device and method for reducing emissions in catalytic converter exhaust systems |
US5987882A (en) * | 1996-04-19 | 1999-11-23 | Engelhard Corporation | System for reduction of harmful exhaust emissions from diesel engines |
US6713025B1 (en) | 1999-09-15 | 2004-03-30 | Daimlerchrysler Corporation | Light-off and close coupled catalyst |
US7380401B2 (en) * | 2003-05-09 | 2008-06-03 | Siemens Aktiengesellschaft | Method for monitoring the speed of a bi-turbocharger |
US7748213B2 (en) * | 2005-12-07 | 2010-07-06 | Nissan Motor Co., Ltd. | Exhaust system |
US20090314082A1 (en) | 2008-06-23 | 2009-12-24 | Sujan Vivek A | Virtual turbine speed sensor |
US7861580B2 (en) * | 2008-06-23 | 2011-01-04 | Cummins Ip, Inc. | Virtual turbine speed sensor |
Non-Patent Citations (1)
Title |
---|
Chinese Office Action issued by the State Intellectual Property Office of the People's Republic of China, dated Jan. 21, 2013. |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9003792B2 (en) | 2012-04-05 | 2015-04-14 | GM Global Technology Operations LLC | Exhaust aftertreatment and exhaust gas recirculation systems |
US10001057B2 (en) | 2014-08-04 | 2018-06-19 | Achates Power, Inc. | Exhaust layout with accompanying firing sequence for two-stroke cycle, inline, opposed-piston engines |
US9970295B2 (en) | 2016-01-29 | 2018-05-15 | Pratt & Whitney Canada Corp. | Engine assembly with turbine support casing |
US11939901B1 (en) | 2023-06-12 | 2024-03-26 | Edan Prabhu | Oxidizing reactor apparatus |
Also Published As
Publication number | Publication date |
---|---|
CN102287250B (en) | 2015-05-06 |
DE102011015255B4 (en) | 2018-08-09 |
CN102287250A (en) | 2011-12-21 |
DE102011015255A1 (en) | 2011-11-10 |
US20110239644A1 (en) | 2011-10-06 |
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